Flask



FIG. 1 is a front, top and left side perspective view of the flaskshowing our new design;

FIG. 2 is a top view thereof.

FIG. 3 is a bottom view thereof.

FIG. 4 is a top view thereof with the cap open.

FIG. 5 is front view thereof.

FIG. 6 is left side view thereof, the right side view being a mirrorimage thereof; and,

FIG. 7 is a back view thereof.

The ornamental design for a flask, as shown and described.